Skip to main content

Main menu

  • Home
  • Content
    • First Release
    • Current
    • Archives
    • Collections
    • Audiovisual Rheum
    • COVID-19 and Rheumatology
  • Resources
    • Guide for Authors
    • Submit Manuscript
    • Payment
    • Reviewers
    • Advertisers
    • Classified Ads
    • Reprints and Translations
    • Permissions
    • Meetings
    • FAQ
    • Policies
  • Subscribers
    • Subscription Information
    • Purchase Subscription
    • Your Account
    • Terms and Conditions
  • About Us
    • About Us
    • Editorial Board
    • Letter from the Editor
    • Duncan A. Gordon Award
    • Privacy/GDPR Policy
    • Accessibility
  • Contact Us
  • JRheum Supplements
  • Services

User menu

  • My Cart
  • Log In

Search

  • Advanced search
The Journal of Rheumatology
  • JRheum Supplements
  • Services
  • My Cart
  • Log In
The Journal of Rheumatology

Advanced Search

  • Home
  • Content
    • First Release
    • Current
    • Archives
    • Collections
    • Audiovisual Rheum
    • COVID-19 and Rheumatology
  • Resources
    • Guide for Authors
    • Submit Manuscript
    • Payment
    • Reviewers
    • Advertisers
    • Classified Ads
    • Reprints and Translations
    • Permissions
    • Meetings
    • FAQ
    • Policies
  • Subscribers
    • Subscription Information
    • Purchase Subscription
    • Your Account
    • Terms and Conditions
  • About Us
    • About Us
    • Editorial Board
    • Letter from the Editor
    • Duncan A. Gordon Award
    • Privacy/GDPR Policy
    • Accessibility
  • Contact Us
  • Follow jrheum on Twitter
  • Visit jrheum on Facebook
  • Follow jrheum on LinkedIn
  • Follow jrheum on YouTube
  • Follow jrheum on Instagram
  • Follow jrheum on RSS
Abstract

Production of thromboxane A2 and prostaglandin i2 affected by interaction of heat aggregated IgG, endothelial cells, and platelets in lupus nephritis.

Naoko Kaneko, Jun-Ichi Masuyama, Hiroyuki Nara, Daisuke Hirata, Masahiro Iwamoto, Hitoaki Okazaki, Seiji Minota and Taku Yoshio
The Journal of Rheumatology October 2002, 29 (10) 2106-2113;
Naoko Kaneko
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Jun-Ichi Masuyama
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Hiroyuki Nara
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Daisuke Hirata
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Masahiro Iwamoto
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Hitoaki Okazaki
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Seiji Minota
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
Taku Yoshio
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • Article
  • Info & Metrics
  • References
  • PDF
  • eLetters
PreviousNext
Loading

Abstract

OBJECTIVE: To examine the role of immune complexes in the prostanoid metabolism of glomerular capillary endothelial cells (EC) and platelets in lupus nephritis. Heat aggregated IgG (HA-IgG), instead of immune complexes, was incubated using an in vitro coculture system with human umbilical vein EC, instead of glomerular capillary EC, and platelets. The effect of complement component C1q and a novel imidazole-type thromboxane A2 (TXA2) synthetase inhibitor, DP-1904, on this prostanoid metabolism change was also investigated. METHODS: EC monolayers (1.5x10(5) cells/well) were incubated with various concentrations of HA-IgG, monomeric IgG, or medium alone for 1 h at 37 degrees C, and then incubated with platelet suspensions (1x10(8) cells/ml) for various times. Concentrations of TXB2 and 6-keto-prostaglandin F(1alpha) (6-keto-PGF(1alpha)), the stable hydrolysis products of TXA2 and prostaglandin I2 (PGI2), respectively, released in the supernatants were measured by ELISA. RESULTS: HA-IgG bound to EC monolayers produced TXB2 and 6-keto-PGF(1alpha) in a concentration dependent manner and much more than monomeric IgG or medium alone did. However, the production of 6-keto-PGF(1alpha) stimulated with HA-IgG was much lower than that of TXB2, indicating a large imbalance between TXA2 and PGI2. Preincubation of HA-IgG with purified C1q partially suppressed the production of TXB2, but not that of 6-keto-PGF(1alpha). DP-1904 suppressed the production of TXB2 completely, but by sharp contrast, it dramatically increased the production of 6-keto-PGF(1alpha) from EC and platelets by HA-IgG. CONCLUSION: The large imbalance of TXA2 and PGI2 produced by the interaction of EC, immune complexes, and platelets may be associated with alterations in glomerular pathological findings and hemodynamics mediated by immune complexes in lupus nephritis. C1q and a TXA2 synthetase inhibitor may improve the abnormal prostanoid metabolism change of lupus nephritis.

PreviousNext
Back to top

In this issue

The Journal of Rheumatology
Vol. 29, Issue 10
1 Oct 2002
  • Table of Contents
  • Index by Author
Download PDF
Article Alerts
Sign In to Email Alerts with your Email Address
Email Article

Thank you for your interest in spreading the word about The Journal of Rheumatology.

NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. We do not capture any email address.

Enter multiple addresses on separate lines or separate them with commas.
Production of thromboxane A2 and prostaglandin i2 affected by interaction of heat aggregated IgG, endothelial cells, and platelets in lupus nephritis.
(Your Name) has forwarded a page to you from The Journal of Rheumatology
(Your Name) thought you would like to see this page from the The Journal of Rheumatology web site.
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Citation Tools
Production of thromboxane A2 and prostaglandin i2 affected by interaction of heat aggregated IgG, endothelial cells, and platelets in lupus nephritis.
Naoko Kaneko, Jun-Ichi Masuyama, Hiroyuki Nara, Daisuke Hirata, Masahiro Iwamoto, Hitoaki Okazaki, Seiji Minota, Taku Yoshio
The Journal of Rheumatology Oct 2002, 29 (10) 2106-2113;

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero

 Request Permissions

Share
Production of thromboxane A2 and prostaglandin i2 affected by interaction of heat aggregated IgG, endothelial cells, and platelets in lupus nephritis.
Naoko Kaneko, Jun-Ichi Masuyama, Hiroyuki Nara, Daisuke Hirata, Masahiro Iwamoto, Hitoaki Okazaki, Seiji Minota, Taku Yoshio
The Journal of Rheumatology Oct 2002, 29 (10) 2106-2113;
del.icio.us logo Digg logo Reddit logo Twitter logo CiteULike logo Facebook logo Google logo Mendeley logo
  • Tweet Widget
  • Facebook Like
  • Google Plus One
Bookmark this article

Jump to section

  • Article
  • Info & Metrics
  • References
  • PDF
  • eLetters

Related Articles

Cited By...

Similar Articles

Content

  • First Release
  • Current
  • Archives
  • Collections
  • Audiovisual Rheum
  • COVID-19 and Rheumatology

Resources

  • Guide for Authors
  • Submit Manuscript
  • Author Payment
  • Reviewers
  • Advertisers
  • Classified Ads
  • Reprints and Translations
  • Permissions
  • Meetings
  • FAQ
  • Policies

Subscribers

  • Subscription Information
  • Purchase Subscription
  • Your Account
  • Terms and Conditions

More

  • About Us
  • Contact Us
  • My Alerts
  • My Folders
  • Privacy/GDPR Policy
  • RSS Feeds
The Journal of Rheumatology
The content of this site is intended for health care professionals.
Copyright © 2022 by The Journal of Rheumatology Publishing Co. Ltd.
Print ISSN: 0315-162X; Online ISSN: 1499-2752
Powered by HighWire